北太平洋大洋航路风区范围气候变化特征分析
北太平洋是世界远洋运输的繁忙水域，存在一些典型的大洋航路，并随气候变化存在一定的影响。该文利用1960-2010年NCEP风场再分析资料，通过引入风区面积指数和纬向变化指数，运用Morlet小波分析研究其时频变化特征，从而描述风区范围的气候变化。最后，采用滑动相关分析，探讨了风区范围变化与ENSO事件 指数关系的相关性问题。研究表明，北太平风场范围在高纬度逐渐增大，且有向低纬度漂移的趋势，低纬度反之；风区范围存在不同的年际和年代际的变化周期；并与 指数存在一定的相关性，相关系数在跃变点产生突变。研究结果不仅提供北太平洋风场变化研究的新思路，也为北太平洋大洋航路和气象导航部门提供了较为详实的风场变化规律资料，起到一定参考作用。
Characteristic analysis of wind zone climate change in the North Pacific Ocean route
North Pacific is the busy waters of the World Ocean transportation. There are some typical ocean routes, and some fluctuations in the change of route with the climate change. In this paper, through the introduction of wind area index and zonal change index indicators, the 1960-2010 NCEP wind reanalysis data was used to describe the annual variation of wind field through Morlet wavelet analysis, which is used to analyze and research the climate change of wind zone. At last, the correlation between the wind field change index and ENSO index is discussed by sliding correlation analysis method. The results show that the wind zone in North Pacific high latitudes increases yearly and has the trend to low latitude, and low latitudes and vice versa; The wind zone has different interannual and interdecadal period; The wind zone has certain correlation with index, and the correlation coefficient has abrupt change. The results not only provides a new method for the North Pacific wind change research, but also for the North Pacific Ocean route and meteorological departments to provide a more detailed variation of wind field data and reference.
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